Discharge element substrate and recording apparatus

Abstract

Provided is a discharge element substrate, including: a plurality of discharge elements configured to discharge liquid housed in a liquid chamber from a discharge port by energy generated by an energy element provided to a substrate; a first electrode configured to apply voltage to the plurality of discharge elements; a selection circuit configured to select any one of the plurality of discharge elements; and a second electrode configured to apply voltage to the discharge element selected by the selection circuit such that the discharge element is caused to discharge liquid. The plurality of discharge elements are arranged along a first direction. The first electrode is connected to the plurality of discharge elements in common along the first direction of the substrate.

What is claimed is: 
     
         1 . A discharge element substrate, comprising:
 a plurality of discharge elements configured to discharge liquid housed in a liquid chamber from a discharge port by energy generated by an energy element provided to a substrate;   a first electrode configured to apply voltage to the plurality of discharge elements;   a selection circuit configured to select any one of the plurality of discharge elements; and   a second electrode configured to apply voltage to the discharge element selected by the selection circuit such that the discharge element is caused to discharge liquid, wherein:   the plurality of discharge elements are arranged along a first direction; and   the first electrode is connected to the plurality of discharge elements in common along the first direction of the substrate.   
     
     
         2 . The discharge element substrate according to  claim 1 , wherein two first electrodes are formed in parallel so as to sandwich the plurality of discharge elements arranged along the first direction. 
     
     
         3 . The discharge element substrate according to  claim 2 , wherein:
 a part of the plurality of discharge elements are connected to one of the first electrodes; and   a remaining part of the plurality of discharge elements are connected to the other of the first electrodes.   
     
     
         4 . The discharge element substrate according to  claim 3 , wherein the plurality of discharge elements are connected to the one of the first electrodes and the other of the first electrodes alternatingly. 
     
     
         5 . The discharge element substrate according to  claim 3 , wherein the plurality of discharge elements are distributed to the one of the first electrodes and the other of the first electrodes with a group of a predetermined number of discharge elements. 
     
     
         6 . The discharge element substrate according to  claim 3 , wherein two second electrodes are formed in parallel along the first direction so as to further sandwich the two first electrodes. 
     
     
         7 . The discharge element substrate according to  claim 6 , further comprising a plurality of drive circuits corresponding to the plurality of discharge elements, respectively, wherein:
 the selection circuit is configured to select, from among the plurality of drive circuits, the drive circuit corresponding to the discharge element to be driven; and   the second electrode is configured to apply voltage to the discharge element through the selection circuit and the drive circuit.   
     
     
         8 . The discharge element substrate according to  claim 1 , wherein, in each of the plurality of discharge elements, a distance to the first electrode is smaller than a distance to the second electrode. 
     
     
         9 . The discharge element substrate according to  claim 1 , wherein the first electrode is a power supply electrode, and the second electrode is a ground electrode. 
     
     
         10 . The discharge element substrate according to  claim 1 , wherein the first electrode is a ground electrode, and the second electrode is a power supply electrode. 
     
     
         11 . The discharge element substrate according to  claim 1 , wherein the first electrode is divided into a plurality of electrodes in the first direction. 
     
     
         12 . A recording apparatus, comprising a recording head including a discharge element substrate, wherein:
 the discharge element substrate comprises:
 a plurality of discharge elements configured to discharge liquid housed in a liquid chamber from a discharge port by energy generated by an energy element provided to a substrate; 
 a first electrode configured to apply voltage to the plurality of discharge elements; 
 a selection circuit configured to select any one of the plurality of discharge elements; and 
 a second electrode configured to apply voltage to the discharge element selected by the selection circuit such that the discharge element is caused to discharge liquid, wherein: 
   the plurality of discharge elements are arranged along a first direction;   the first electrode is connected to the plurality of discharge elements in common along the first direction of the substrate; and   an image is recorded on a recording material by liquid discharged from the discharge element substrate.